Ground anchor



Aug. 30, 1927. 1,640,504

M. ISAACS I I GROUND ANCHOR F110! Feb. 19. 1926 Patented Aug. 30, 1927.

o-NiT Eli ten-sot MARK ISAAGS, or INNnAroLis, MI NESOTA.

GROUND ANCHOR.

Application filed February 19, 1926', Serial No. 89,492 and in'canadaDecember 18, 1925.

The invention relates to improven'ients'in ground anchors and an objectof the invention is to provide an anchor which can be readily driveninto ground below ground level and which cannot be withdrawn withoutentailing the displacement of a considerable quantity of earth; p

A further object to construct the ground anchor from comparatively fewparts and which can be" manufactured inexpensively and which does notrequire'speci'al tools to be used in the placing thereof.

\Vith the above more important objects in 5 View the invention consistsessentially in the arrangement, and construction of parts hereinaftermore particularly described; refer ence being team theaccompanyingdrawing; in which V p Fig. l is a vertical sectional viewcentrally through the tube employed and showingit in the ground. 3

Fig. 2 is a verticalsectional view centrally through the complete anchorand with the fingers. Fig. 7 is an enlarged detailedhorizontal sectionalview at 7-7 Figure 3.

'In the drawing like characters of reference indicate correspondingparts in the several figures.

The present device is designed for anchoring the ends of cables, ropesand such like to the ground so that they cannot pull out ex cept undervery exceptional or extreme conditions.

In constructing my device, I first. provide a hollow tube or pipe 1 ofpredetermined length which has the one end thereof split as indicated at2 and brought to a tapering shape so that the said tube can be readily55 driven into the ground 3 into a position such as shown in Figure 1.

and anchored to the" fingers containedfin the tube and the rod I providealso a two piece or split plug 4 for the upper end of the tube, the plugentering the end of the tube andbeingprovided with an outstandingflange5 which prevents it from dropping down. A rod 6 of predeterminedlengthis passedslidably through thetube and has the upper end bent to providean eye 7 and the lower end fitted with a. head 8, the headbeingpermanently secured to the end of the rod and being also of such'dimension that it can be passed through the tube. The rod passesslidably through the plug.

The head8 is provided with rounded corners 9 and has the sid'es thereoi'cut out between the corners to provide. side recesses 10. v To the headI connect similar anchoring fingers 11 and each finger has the body partthereofcentrally bent to provide angularly disposed flanges or" wings 12and '13 which are tapered to a point-.14 and at the end re-v mote fromthe point a flat attaching lug 15 is formed which normally takes aposition more or less at right angles to the boov of the finger. Thelugis supplied with an angularly disposed slot 16;" The upper or lugcarrying ends of'th-e fingers normally enter or pass across the recesses10 of the head and the lugs'yare attached to the head in a dependingposition by pins 17 secured" to the head and passing 'slidably throughtheslots.

WVhen it is desired to place the anchor in the ground, the tube is firstdriven into the groundinto the position as best shown. in Figure 1. Onethen gathers the fingers to-' getherand enters them in the upper endofthe tube and thenfforces the roddown until the 'fingerstak-e theposition shown in Figure 2. Itis desirable that the' fingers have anatural tendency to springoutwardly when so place'din the tube. One extplaces the two part collar around the rod and inserts it in the upperend of the tube. The next operation is to place a rod or filler in theeye and then drive the eye and consequently the rod downwardly. As therod moves ClOWlL the fingers spread or openup the previously close-dlower end of the tube and with the result that in the further driving ofthe rod the fingers enter the ground and take an outward course radialto the head. i

The shape of the fingers is such that they will work outwardly in theground as the rod is driven down and as the fingers expand ormoveoutwardly, the right angl d bend 18 at the upper end of each fingerstraightens out, that is, the bodies of the fingers tend to come intothe same horizontal plane as the lugs. As the bend 18 is fiattened bythe spreading of the fingers the la ter travel inwardly upon the head 8with the result that the pins 17 in conjunction with the slots 16 causea rotary movement of the head 8 so that in the final position of theanchor, the fingersare overlying the corners ot the head more or less inthe po-sition as shown in Figure 5 and the pins are at the then outerends of the slots.

Accordingly it is practically impossible tor the fingers to buckledownwardly upon the rod being pulled upwardly with the result that therod will serve eil'ectively to anchor cable, rope, pulling line or suchlike attached to the eye 7 thereof.

What I claim as my invention is 1. A ground anchor comprising a pipeadapted to be driven into the ground, a rod extending lengthwise throughthe pipe, a head secured to the lower end of the rod and designed topass through the pipe, said head being substantially rectangular andhaving vertical slots in the sides thereof, pendent fingers crossing theslots of the head and fitted at their upper ends with inturned angularlyslotted lugs, pins passing through the slots of the fingers and into thehead and slidably attaching the fingers to the head, said fingers beinglengthwise bowed and having their lower ends pointed whereby in the downdriving of therod the fingers will strai hten out in the soil at the endof the pipe bending at the bases of the lugs and will take a radialposition overlying the corners of the head.

2. A ground anchor comprising a plural ity of fingers attached to andnormally depending from a suitable carrying means, said fingers beingadapted to spread apart when driven into the ground, a plurality ofsupplemental finger supports positioned intermediate said fingersin thenormal depending position of the fingers and means tor shitting saidsupplemental supports in a direction to position same beneath and in supporting engagement with the fingers in the spread-apart position of thelatter.

3. A ground anchor comprising a pluralout of engagement therewith whenthe fin-- gers are in normal depending position and means actuated bythe spreading of the fingers .tor shitting said supplemental supportsinto engagement with the fingers to sustain the latter in spread apartposition. 7

4. A ground anchor comprising a head, a

plurality of fingers normally depending from the head and having theupper terminals thereof bent substantially at right angles to the bodyportions of the fingers and supported upon the upper surface of thehead, and a slot and pin connection securing the bent terminalot'each-finger to the said head, the slots of said connections being inclined with reference to the longitudinal axis of the fingers, saidfingers being adapted to spread apart when driven into the ground and totravel inwardly across the head whereby the latter is rotated throughthe coaction of the pins and inclined slots torming the connectiontherebetween and the several fingers and a plurality of supplementalfinger supports normally positioned between the several fingers out ofengagement there with but adapted to be shifted into supportmgengagement with said fingers by. the

aforesaid rotation of the head. 7 I 5. A ground anchor coinprising atube adapted to be driven into the ground, a head slidablewithin saidtube, a plurality of fingers attached to the headand normally dependingtheretrom, said fingers being adapted to spread apart when driven intothe ground beyond the lower end 01": the tube, corner projectionscarried by the head and positioned interi'nediate said fingers when thelatter are in normal depending positions, and means for turning the headrelatively to the fingers during spreading of the latter position saidcorner projections beneath the fingers and in supporting engagementtherewith. V

Signed at innipeg this 27th day of January, 1926. v

MARK ISAACS.

